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        <h3 id="1-windows-安装"><a href="#1-windows-安装" class="headerlink" title="1. windows 安装"></a>1. <code>windows</code> 安装</h3><h4 id="1-1-安装-java-JDK"><a href="#1-1-安装-java-JDK" class="headerlink" title="1.1 安装 java JDK"></a>1.1 安装 <code>java JDK</code></h4><ul>
<li><code>neo4j</code> 用java语言编写的图形数据库，运行时需要启动<code>JVM</code>进程，安装后在<code>cmd</code> 输入<code>java -version</code> 检查是否安装好。<a target="_blank" rel="noopener" href="https://www.oracle.com/technetwork/java/javase/downloads/index.html"><code>JAVA JDK</code></a> </li>
<li>如果已安装，忽略这一步。</li>
<li>注意安装<code>JDK</code> 版本不要太高，否则程序不兼容，导致<code>neo4j</code>启动失败。安装版本<code>JDK11</code>。<span id="more"></span>
<h4 id="1-2-下载安装Neo4j"><a href="#1-2-下载安装Neo4j" class="headerlink" title="1.2 下载安装Neo4j"></a>1.2 下载安装<code>Neo4j</code></h4></li>
<li><code>Neo4j</code> 应用程序主要目录：<ul>
<li><code>bin</code>目录：用于存储<code>Neo4j</code>的可执行程序；</li>
<li><code>conf</code>目录：用于控制<code>Neo4j</code>启动的配置文件；</li>
<li><code>data</code>目录：用于存储核心数据库文件；</li>
<li><code>plugins</code>目录：用于存储<code>Neo4j</code>的插件.</li>
</ul>
</li>
</ul>
<h4 id="1-3-添加环境变量"><a href="#1-3-添加环境变量" class="headerlink" title="1.3 添加环境变量"></a>1.3 添加环境变量</h4><h4 id="1-4-Neo4j-启动和停止"><a href="#1-4-Neo4j-启动和停止" class="headerlink" title="1.4 Neo4j 启动和停止"></a>1.4 <code>Neo4j</code> 启动和停止</h4><ul>
<li>注意：在管理员下运行中断</li>
</ul>
<p>1）控制台启动</p>
<ul>
<li><code>neo4j.bat console</code></li>
</ul>
<p>2）安装<code>neo4j</code> 服务<br>2.1）安装和卸载服务</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">neo4j.bat install-service</span><br><span class="line">neo4j.bat uninstall-service</span><br></pre></td></tr></table></figure>
<p>2.2）启动，停止，重启，查看服务状态</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">neo4j.bat start</span><br><span class="line">neo4j.bat stop</span><br><span class="line">neo4j.bat restart</span><br><span class="line">neo4j.bat status</span><br></pre></td></tr></table></figure>
<h3 id="2-linux-安装"><a href="#2-linux-安装" class="headerlink" title="2. linux 安装"></a>2. <code>linux</code> 安装</h3><h4 id="2-1-安装-jdk"><a href="#2-1-安装-jdk" class="headerlink" title="2.1 安装 jdk"></a>2.1 安装 <code>jdk</code></h4><ul>
<li>搜索查询要安装的<code>jdk</code><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">yum search jdk</span><br><span class="line"># 安装：java-11-openjdk.x86_64</span><br><span class="line">yum install java-11-openjdk.x86_64</span><br><span class="line"># 检查是否安装成功</span><br><span class="line">java -version</span><br></pre></td></tr></table></figure>
<h4 id="2-2-添加-yum-源"><a href="#2-2-添加-yum-源" class="headerlink" title="2.2  添加 yum 源"></a>2.2  添加 <code>yum</code> 源</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line">vi /etc/yum.repos.d/neo4j.repo </span><br><span class="line"></span><br><span class="line">[neo4j]  </span><br><span class="line">name=Neo4j Yum Repo</span><br><span class="line">baseurl=http://yum.neo4j.org/stable</span><br><span class="line">enabled=1</span><br><span class="line">gpgcheck=0</span><br></pre></td></tr></table></figure></li>
</ul>
<h4 id="2-3-安装-neo4j"><a href="#2-3-安装-neo4j" class="headerlink" title="2.3 安装 neo4j"></a>2.3 安装 <code>neo4j</code></h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">yum install neo4j</span><br></pre></td></tr></table></figure>

<h4 id="2-4-修改最大打开文件限制"><a href="#2-4-修改最大打开文件限制" class="headerlink" title="2.4 修改最大打开文件限制"></a>2.4 修改最大打开文件限制</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">vi /etc/security/limits.conf </span><br><span class="line"></span><br><span class="line">* soft nofile 65535 </span><br><span class="line">* hard nofile 65535</span><br></pre></td></tr></table></figure>

<h4 id="2-5-修改监听地址"><a href="#2-5-修改监听地址" class="headerlink" title="2.5 修改监听地址"></a>2.5 修改监听地址</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">vi /etc/neo4j/neo4j.conf</span><br><span class="line"></span><br><span class="line"># dbms.connectors.default_listen_address=0.0.0.0</span><br><span class="line"># 取消注释</span><br></pre></td></tr></table></figure>

<h4 id="2-5-开放防火墙端口"><a href="#2-5-开放防火墙端口" class="headerlink" title="2.5 开放防火墙端口"></a>2.5 开放防火墙端口</h4><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"># 注意：需要开启7474、7687端口</span><br><span class="line">[root@localhost ~]# firewall-cmd --permanent --add-port=7474/tcp</span><br><span class="line">success</span><br><span class="line">[root@localhost ~]# firewall-cmd --permanent --add-port=7687/tcp</span><br><span class="line">success</span><br><span class="line">[root@localhost ~]# firewall-cmd --reload</span><br><span class="line">success</span><br></pre></td></tr></table></figure>
<ul>
<li>注意：第一次访问：<code>http://IP:7474/</code> 会跳到登录验证界面，默认用户名、密码为<code>neo4j</code>，之后登录成功，会跳到修改密码界面。</li>
</ul>
<h4 id="2-6-备份-恢复（社区版）"><a href="#2-6-备份-恢复（社区版）" class="headerlink" title="2.6 备份/恢复（社区版）"></a>2.6 备份/恢复（社区版）</h4><ul>
<li>注意：社区版不支持热备，需要停机备份。</li>
<li>备份：<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">neo4j stop</span><br><span class="line">neo4j-admin dump --database=graph.db --to=/data/backup/neo4j/graphdb`date +&quot;%Y&quot;`-`date +&quot;%m&quot;`-`date +&quot;%d&quot;`</span><br><span class="line">neo4j start</span><br></pre></td></tr></table></figure></li>
<li>还原：<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">neo4j-admin load --from=graphdb2017-11-17 --database=graph.db</span><br></pre></td></tr></table></figure></li>
</ul>
<h4 id="2-7-备份（企业版）"><a href="#2-7-备份（企业版）" class="headerlink" title="2.7 备份（企业版）"></a>2.7 备份（企业版）</h4><ul>
<li>支持热备<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line">$neo4j-home&gt; mkdir /mnt/backup</span><br><span class="line">$neo4j-home&gt; bin/neo4j-admin backup --from=192.168.1.34 --backup-dir=/mnt/backup --name=graph.db-backup</span><br><span class="line">Doing full backup...</span><br><span class="line">2017-02-01 14:09:09.510+0000 INFO  [o.n.c.s.StoreCopyClient] Copying neostore.nodestore.db.labels</span><br><span class="line">2017-02-01 14:09:09.537+0000 INFO  [o.n.c.s.StoreCopyClient] Copied neostore.nodestore.db.labels 8.00 kB</span><br><span class="line">2017-02-01 14:09:09.538+0000 INFO  [o.n.c.s.StoreCopyClient] Copying neostore.nodestore.db</span><br><span class="line">2017-02-01 14:09:09.540+0000 INFO  [o.n.c.s.StoreCopyClient] Copied neostore.nodestore.db 16.00 kB</span><br><span class="line">...</span><br><span class="line">...</span><br><span class="line">...</span><br></pre></td></tr></table></figure></li>
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